ARLA/CLUSTER: Sucesso do SSTV na ISS - Amanhã, sábado, há mais transmissões

[João Costa > CT1FBF]

ISS SSTV success – More transmissions Saturday

During Thursday, December 18 the Russian ARISS team members successfully
activated the amateur radio Slow Scan TV (SSTV) experiment from the
International Space Station (ISS) on 145.800 MHz FM.
Further transmissions are planned for Saturday, December 20, 2014

Among the many radio amateurs receiving the pictures was *Frank Heritage
M0AEU*. His station comprised a 5 element crossed Yagi on a Yaesu 5600B
Az/Ele rotator, about 4 metres above the ground, interfaced with a LVB
Tracker. Frank used the Ham Radio Deluxe satellite program (v5) for the
tracking and a Yaesu FT736R feeding audio to the free MMSSTV software on a
Dell laptop.
ISS SSTV image received by Frank Heritage M0AEU

*Martin Ehrenfried G8JNJ* used the online SUWS Web-based Software Defined
Radio (WebSDR) located near London to receive a number of images during the
day. Martin made the 144 and 430 MHz helix antennas for the WebSDR which
are optimized for satellite reception. The SUWS WebSDR is available for
anyone to use.

The next ISS SSTV transmissions on 145.800 MHz should start around 12:40 UT
on Saturday, December 20 and terminate around 21:30 UT.

It is expected SSTV mode will be PD180 with 3 minute off periods between
transmissions. A total of 12 different photos will be sent during the
operational period.

The transmission will be mode using the Kenwood D710 transceiver located in
the Russian Service Module. It is thought the equipment will be producing
about 5 watts output which should provide a very strong signal.

For links to download free SSTV software and to track the ISS see
http://amsat-uk.org/2014/12/18/iss-sstv-success/
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